A violent ejection, such as the spurting out of lava from a volcano. / A sudden release of pressure or tension. / An infection of the skin resulting in a rash or blemishing.

plural of eruption

eruptive

(intransitive) To eject something violently (such as lava or water, as from a volcano or geyser). / (intransitive) To burst forth; to break out.

That erupts or bursts forth. / Accompanied by eruptions. / (geology) Produced by eruption.

An eruptive rock, one produced by eruption.

Third-person singular simple present indicative form of erupt

present participle of erupt

simple past tense and past participle of erupt

plural of eruptive